Answer / nibel

actually the battery charger should deliver 10-20% more than the battery voltage rating. if its exceeds there will be the chances of explosion.
no need to worry about the polarity but the voltage rating matters.

Answer / soumaydeepmaity

when u connect an LED with two 1.5 cells they will glow and if u add another two they will glow more.similarly when u will connect your batteries with two sources it will get charged quickly .

what type of oil is used in transformers? a)conduting b) insulating

25 Answers   ABB, LGS,

---

what is the principle of singkle phase energy meter?

3 Answers  

---

What is DC power factor??

2 Answers   HCL,

---

If symmetrical fault occurs at the terminal of a synchronous motor then how the motor will act...explain it..

0 Answers   Bhel,

---

In my power station 220 volts dc battery set. they coneected 84th cell taped

1 Answers   KPTCL,

---

1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to confirm its base capacity?

0 Answers  

---

Why is a thicker conductor necessary to carry a current in A.C.as compared to D.C. ?

1 Answers  

---

how to determine the size of power cable according to load current

1 Answers   JSW,

---

What is the formula to calculate the no load current of a single & three phase induction motor

0 Answers   HCL, Nokia,

---

generally on the roadside v hav 11kv line which is being step down to 440v line to line....so any1 can tell me which type of transformer they r using whether it is star to delta,delta to star etc...???

9 Answers   Core Solutions,

---

What is the difference between electronic regulator and ordinary electrical rheostat regulator for fans?

0 Answers  

---

What is Tan Delta Test

1 Answers   Power Grid,

---